Which food has less impact on blood sugar?

SPONGE CAKE (SUGAR, CAKE FLOUR [BLEACHED WHEAT FLOUR], SUGARED EGG YOLKS [EGG YOLKS, SUGAR], WHOLE EGGS, CAKE SHORTENING [SOYBEAN OIL, GLYCERYL-LACTO ESTERS OF FATTY ACIDS, VEGETABLE MONO- & DIGLYCERIDES, TBHQ {PROTECTS FLAVOR}], WHOLE MILK [MILK, VITAMIN A PALMITATE, VITAMIN D3], PAN SPRAY [SOY OIL, PETROLATUM. CONTAINS 2% OR LESS OF SOY LECITHIN, MONO- & DIGLYCERIDES, BHT], BAKING POWDER [CORNSTARCH, SODIUM BICARBONATE, SODIUM ALUMINUM SULFATE, MONOCALCIUM PHOSPHATE], SALT, VANILLA FLAVOR [WATER, PROPYLENE GLYCOL, ALCOHOL, ARTIFICIAL FLAVORS, CITRIC ACID]), CREAM FILLING (HEAVY WHIPPING CREAM [CREAM {MILK}, CARRAGEENAN], CREAM CHEESE [PASTEURIZED MILK & CREAM, CHEESE CULTURE, SALT, CAROB BEAN GUM], SUGAR, VANILLA EXTRACT [VANILLA BEAN EXTRACTIVES, CORN SYRUP, ETHYL ALCOHOL, WATER]), LEMON SYRUP (SUGAR, WATER, LEMON JUICE, LEMON JUICE POWDER [CORN SYRUP SOLIDS, LEMON JUICE SOLIDS, LEMON OIL, SILICON DIOXIDE {PREVENTS CAKING}]) BUTTERCREAM (FONDANT SUGAR [SUCROSE, CORN STARCH], SHORTENING [PALM OIL, MONO- & DIGLYCERIDES, POLYSORBATE 60, CITRIC ACID {PRESERVATIVE}], SALTED BUTTER [PASTEURIZED SWEET CREAM {MILK}, SALT], WATER, INVERT SYRUP, SALT, VANILLA FLAVOR [WATER, PROPYLENE GLYCOL, ALCOHOL, ARTIFICIAL FLAVORS, CITRIC ACID]), LEMON PASTRY FILLING (WATER, SUGAR, DEXTROSE, MODIFIED FOOD STARCH, PARTIALLY HYDROGENATED SOYBEAN AND COTTONSEED OILS. CONTAINS 2% OR LESS OF: SODIUM CITRATE, CITRIC ACID, LEMON PUREE, SALT, NATURAL & ARTIFICIAL FLAVOR, SORBIC ACID, AGAR AGAR, YELLOW 5, YELLOW 6, BLUE 1), WHITE CHOCOLATE CURLS (SUGAR, COCOA BUTTER, WHOLE MILK POWDER, WHEY POWDER, LACTOSE, SOY LECITHIN [EMULSIFIER], NATURAL VANILLA), WHITE CHOCOLATE DISC (SUGAR, COCOA BUTTER, WHOLE MILK POWDER, WHEY POWDER, EMULSIFIER [SOY LECITHIN], POLYGLYCEROL POLYRICINOLEATE, NATURAL VANILLA, HYDROGENATED PALM KERNEL OIL, BLUE 2, RED 40, YELLOW 6, BLUE 1, TITANIUM DIOXIDE, SKIMMED MILK POWDER, MONOGLYCERIDES, ARTIFICIAL FLAVOR).